duodecimo Meaning, Definition & Usage

Du`o*dec"i*mo adjective
Etymology
L. in duodecimo in twelfth, fr. duodecimus twelfth, fr. duodecim twelve. See Dozen.
Definitions
  1. Having twelve leaves to a sheet; as, a duodecimo from, book, leaf, size, etc.
Du*o*dec"i*mo noun
Wordforms
plural Duodecimos
Definitions
  1. A book consisting of sheets each of which is folded into twelve leaves; hence, indicating, more or less definitely, a size of a book; -- usually written 12mo or 12°.

Webster 1913